1055561051061 has 64 divisors (see below), whose sum is σ = 1806567840000. Its totient is φ = 602015846400.

The previous prime is 1055561051011. The next prime is 1055561051071. The reversal of 1055561051061 is 1601501655501.

It is a happy number.

It is not a de Polignac number, because 1055561051061 - 2⁷ = 1055561050933 is a prime.

It is a super-3 number, since 3×1055561051061³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055561051011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54827565 + ... + 54846813.

It is an arithmetic number, because the mean of its divisors is an integer number (28227622500).

Almost surely, 2^{1055561051061} is an apocalyptic number.

1055561051061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1055561051061 is a deficient number, since it is larger than the sum of its proper divisors (751006788939).

1055561051061 is a wasteful number, since it uses less digits than its factorization.

1055561051061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30147 (or 30141 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 1055561051061 in words is "one trillion, fifty-five billion, five hundred sixty-one million, fifty-one thousand, sixty-one".